Life as a mermaid can be suffocating. Eviana Dumahl has returned home as a clan leader, an orphan, and a heartbroken teenage girl. Her parents are dead and her boyfriend, Brendan, has decided that he needs some time away. While battling her inner turmoil, Eviana is forced into the war that Lucian Sutherland has incited amongst her own kind. With the help of Kain, her friend and formally betrothed, the two work together to prove that they deserve their birthrights as young merfolk leaders. When the Council requests a demonstration of Eviana's mermaid powers, she finds herself with an opportunity to win back Brendan's heart. But her orders to train with a repulsive merman and the presence of an attractive new suitor challenges Eviana to embrace her leadership and resist temptation. Lucian is after her, and no one seems to understand why. Loyalties are tested as the casualties increase, showing Eviana that sometimes it is impossible to delineate between friends and enemies. Betrayal is the second book of The Syrenka Series trilogy following Eviana and her friends as they navigate through the challenges of existing in a secret world.